Shaped blocks fall into a pit where you must arrange them so they fit neatly† a sort of juggling in one direction. The more blocks you can place into a horizontal line simultaneously, the more you score.
And remember to take a break every few hours.
Recall your childhood with a version of Simon Says. Click the buttons in the same order as Simon (the computer) does to advance to the next level. Each level gets increasingly difficult. See how far you can go.